MATLAB: Plotting RMS from .csv files

Question

I have data in the csv format that I'm plotting it using the lines of code below. The data has 2 columns and 1048576 rows. I have uploaded part of it below- the actual files being too large. Can you please tell me how to plot the RMS of the data?

if true clear all Array=csvread('Pencilbreak-63dB.csv'); col1 = Array(:, 1); col2 = Array(:, 2); plot(col1, col2) end

Answer 1

RMS = (sum(col2.^2)/length(col2))^0.5;